vendor/topthink/framework/src/think/route/dispatch/Controller.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2021 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
declare (strict_types = 1);

namespace think\route\dispatch;

use ReflectionClass;
use ReflectionException;
use ReflectionMethod;
use think\App;
use think\exception\ClassNotFoundException;
use think\exception\HttpException;
use think\helper\Str;
use think\route\Dispatch;

/**
 * Controller Dispatcher
 */
class Controller extends Dispatch
{
    /**
     * 控制器名
     * @var string
     */
    protected $controller;

    /**
     * 操作名
     * @var string
     */
    protected $actionName;

    public function init(App $app)
    {
        parent::init($app);

        $result = $this->dispatch;

        if (is_string($result)) {
            $result = explode('/', $result);
        }

        // 获取控制器名
        $controller = strip_tags($result[0] ?: $this->rule->config('default_controller'));

        if (strpos($controller, '.')) {
            $pos              = strrpos($controller, '.');
            $this->controller = substr($controller, 0, $pos) . '.' . Str::studly(substr($controller, $pos + 1));
        } else {
            $this->controller = Str::studly($controller);
        }